TL;DR
A deluge system is a fire-suppression design in which every sprinkler head on the piping is permanently open and the pipe stands empty, so when a separate detection system trips the deluge valve, water discharges from all heads across the protected area simultaneously. It exists for fast-spreading, high-hazard scenarios, aircraft hangars, flammable-liquid storage, transformer bays, where wetting everything at once beats waiting for individual heads to fuse.
What it means
A deluge system is a fire-suppression design in which every sprinkler head on the piping is permanently open and the pipe stands empty, so when a separate detection system trips the deluge valve, water discharges from all heads across the protected area simultaneously. It exists for fast-spreading, high-hazard scenarios, aircraft hangars, flammable-liquid storage, transformer bays, where wetting everything at once beats waiting for individual heads to fuse. Homeowners encounter the concept mainly in commercial property management, where NFPA-mandated trip tests of the valve happen annually.
Where it sits in the glossary
Deluge system is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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